hoffman



July 15, 1952 F. A. HOFFMAN 2,603,245

' LOOM TEMPLE v Filed May 15, 1950 2 SHEETSSHEET 1 J ly 1952 F. A.- HOFFMAN LOOM TEMPLE 2 SHEETS-SHEET 2 Filed May 15, 1950 IN VENTOR A; ATTORNEYJ Patented July 15, 1952 UHTE err LooM Tamm This invention relates, to improvements in temples forlooins. Certain temples heretofore conventionally used included a plurality of guiding or pressure rollers so positioned that the cloth traveling over or under these rollers was distorted longitudinally by the rollers or the rollers and lips which con stitute and apply the, pressure required to hold the web in position, While these prior art devices. could, by sufiicientlytight gripping oithe selvage andadjacent cloth, befmade to holdthe clothto' its full Widthfthe necessarily tight gripping of the'cloth between adjacent offset rollers or lips inevitably resulted in imparting a p anent elongation to the selvage and adjacent area of the cloth so that the affected edges of the Web were rippled or waved." '50 serious has been this condition that it has been conventional to after treat the woven web b'y' subjectingthe saine to controlled stretching r distortion inthe part intermediate the 'se lvage and" adjacent e mi n enem -tr?' e el eet et v d tortion.

A primary object of theinventi n to pro vide' a loozntemple whiehshaHefiect any desired transverse-holding of ;th e cloth web without; howev-er, to any degree longitudinally distorting; e.- g], ar n r. t ina. h e l-vas r-" l e a iacent areas of theiloth. Otherinventive objeetsl be a pareet r ebnsi mtiq h:. lowing description. y

The loom temple of the present invention is characterized by the 'combin'ation'ofa frictionsurfaced flexible belt-supported on a; pairofspacedg enerally parallel rollers a generally flat bed plate, thelatteroil-operating with the belt to bear on opposite sides ofa selvageportion ofa web of cloth being woven'oni a' -loorn, mean' rer urging the belt-preferably a substantial{ area of belt-towarfdthe bedplate under a controlled screams, ((31. en

grip the right; and left hand selvages, respectivelyfof the web.- As-the web is-drawnforward; it rotates the belts and the latter; by reason-of theirfrictional engagement of substantial areas of thesarne with the web and byreas'onof their: angular-itywithrespect to-thaweb, exert laterallyoutward; forces" on the web tending to: hold latter-to its full width but-without any ie'rimp or distor ting 'ef-the selvag'es; The} outwardly ap pliedfo'rce maybe varied'byadjusting the' de I g-ree of angularity o f'thetemples; kl-oldingpresi sure may be increased byadjuetingthti amount of pressure by; the ressure shee is forced againstthebeltf" a;

Specifically, the preterredjform of the? temp 0f "the resent ln vfitir l COIIi PPiSES at fl ifi? surfaced fleiible beittramea over a'pair oesiib stan tially horizontally disposed parallelllspace'd l rollers carrying belt-guiding end 'anges 'and having trunnion's on their-ends; a pressure shoe, atlat. coextensive length with thew-ili-th oi the belt and of substantial width,di'spose be tween the spa-(fed rollers amr'support eci dn 'ith'e inner surface oifthe lowenfligl i-t 'of said belt',sa'id= pressure" shoehaving-' at theout'e-r en (i -thereof a'depending'lip engaging the outer'edge oisai'di belt and constitutingaguide'forthe latter; and

havingapairof-recesses"in'itsfupper i r cl outerend surfaces to receive the lower debt-'- force-applying pin members, saidpressure hoe I being adapted' to transmit a force against said ed e mined p e s r and m a ia ma taining the belt; rollers and'thereforethebelt at a desired angle with respect to su'ch'web, that is to say 'the'axis of thefbelt is maintained outwar dly oblique to thelongitudinal axis of a web; of 'cloth being woven on such lo'oiln in the direp tion of travel; of the web; The belt may be and pr e ab y i u ged s he, at-P at? b a pressure shoe riding on the inner surface ofjthei belt andemi niunction. wi h v. r tesw i reap ean +f m ion ne ta fief e b t u wa yfl toward the bed plate. andhence, to. efiectlgritpin of a web between belt and bed 'plate,; Two sueh mples, right and left hand; comp ements, of each; other; are,"securedr iqnfthe. loqmifra h t0;

'which end portion is provided wini a paie-s spaced horizontally extending p'a'rall'el bdre's or cylindrical recesses constituting bearingss tor inner Grid trunnion-bf theipaii bfi-bGJi-Slfi)? l5 ing rollers and. with teamer-recess i 2,eoa,2415

of the latter, said housing having a key and keyway connection with said bracket and being at least coextensive in length with the width of said belt, said housing having at its outer end a pair of spaced depending portions in the form of jaws or guides which latter are provided with a panof spaced adjustable bearing members for engaging the outer end trunnions of said beltsupporting rollers and which define therebetween a centrally disposed recess adapted to receive the outer end of said pressure sho and to constitute for the latter a guideway permitting limited vertical movement of the same therein, said housing being provided adjacent its inner and outer ends with vertically disposed openings or bores, in alignment with the aforesaid recesses in the upper inner and outer end surfaces of said pressure shoe, to accommodate a pair of force-applying pin members; an upstanding post centrally located and carried on the housing, a U-shaped yoke member having a centrally located aperture adapted to accommodate said upstanding post, the ends of said yoke member being a pair of depending force-applying pins adapted to enter the recesses in the upper inner and outer end surfaces of said pressure shoe; 2. compression spring bearing against the yoke member adjacent said central aperture therein; a lock nut cooperating with said post to maintain said compression spring under compression against said yoke member; an oil-standing lug on said bracket; a bracket arm provided adjacent one end thereof with a pivotal connection with said bracket lug and, adjacent the otherend thereof, with means for attachment to a holder attached to the loom frame, and means for maintaining the temple at any desired angle with respect to the fabric web being woven.

The invention, will now be described in greater particularity, with reference to the appended drawing, in which:

Fig. 1 is a plan view showing a complementary pair of temples mounted in a suitable templesupporting means carried on the loom frame, and gripping the selvages and selvage-adjacent areas of a fabric web being woven thereon;

Fig. 2 is a top plan view of the left-hand temple shown in Fig. 1. minus its bracket arm, and drawn to an enlarged scale;

Fig. 3 is a side elevation view of the temple shown in Fig. 2; I

Fig. 4 is a sectional view taken along line 4, 4 of Fig. 3, with a portion of the belt broken away to show'the pressure shoe member; 7

Fig. 5 is an end elevation view of the temple shown in Figs. 2, 3 and 4;

Fig. 6 is a vertical section taken on line 6, 6, of Fig. 5;.

Fig. 7 is a top plan view of the bracket member of the temple;

Fig. 8 is an end. elevation of the bracket of Fig. 7;

Fig. 9 is a bottom plan view of thehousing member of the temple; and v i Fig. 10 is an end elevation of the housing of Fig. 9.

In the drawing, the friction surfaced flexible belt III of the lefthand temple Tl may be and preferably is an endless rubber web of substantial thickness, which belt is trained over a pair of belt-supporting rollers |2. Roller H is provided with belt-guiding end flanges l3, l4, 1

and trunnions I1, l9, and roller |2.likewise is provided with end flanges I5, and'trunnions I3, 20. The pressure shoe 2|, which is riding'ly 4 supported on the inner surface of the lower flight of belt l0 between rollers I2, is longer than belt i0 is wide and its end portions 22, 23 extend beyond the belt; in these end portions are provided recesses 24, 25 to receive ends of pins 28, 21. From the outer end 23 of pressure sho 2| depends a lip 28 constituting a guide for the outer edge of belt i0.

As clearly shown in Figs. 6-8, bracket 29 includes at the left side thereof a centrally located rectangular recess 30 constituting a vertical guideway for the associated end 22 of pressure shoe 2|, and a pair of spaced horizontally extending recesses 3|, 32 defining bearings for the trunnions l1, l9 of rollers [2. Also formed integrally with bracket 29 is a horizontally disposed substantially rectangular bed plate 33 having a plane and polished upper face against which the underside of the web is pressed by belt ID. If desired, the end and side edges of the bed plate are smoothly rounded off as at 33a, to eliminate possibility of damage to the web.

The top face of the bracket 29 is provided with a keyway 34.

Housing 35 includes an inner end portion 35 the under surface of which is provided with a key 31, complementary with keyway 34 of the bracket, and. an outer end portion 38 from which depend two jaws or guides 39, 40, whose parallel inner surfaces 39a, 40a, in part define a recess or guideway 35a for the outer end 23 of pressure shoe 2|, permitting limited vertical movement of the pressure shoe therein. The inner and outer ends of housing 35 are provided with bores or openings 4|, 42, adapted to accommodate pins 26, 21. Housing 35 is secured to bracket 29 by means of stud bolts 43, 44, which pass through housing 35 by way of bores or openings 45, 46 and thread into threaded bores 41, 48 provided in bracket 29.

Screw threaded into the jaws 39, 40 respectively at the outer end of the housing are bearing inserts 49, 50 provided with axial bores 5|,

52 for receiving the trunnions i8, 20 of rollers |2. The heads of these inserts are slotted, as shown at 53, to permit axial adjustment of the bearings with respect to the rollers.

An upstanding post 54, having its upper end threaded as indicated at 55 is fixed to housing 35, by means of a threaded connection 56 within a boss 51, as shown, centrally with respect to pressure shoe 2 I. I

Yoke member 58, from which depend pins 25 and 21, is provided with a centrally located aperture 59 adapted to accommodate post 54. Compression spring 60 bears against yoke member 53 adjacent aperture 59 therein and is held under compression by means of washer 6|, adjustment nut 62 and lock nut 53.

As shown in Figs. 1 and 5 in particular, the temple is supported on the loom by means of a resilient temple holder 64 of conventional construction, which temple holder per se forms no part of this invention. An arm 65 extends rearwardly from the temple holder with respect to the tical with the left hand temple T1 except that it is the "mirror image of the latter, and forsuch reason is not described in detail.

In use, the desired angularity of temples T1 T2 is effected by suitable settings of the pivotal connections between the same and arms 6, and the desired degree of gripping of the web between belts !0 and bed plates 33 is effected by suitable adjustments of the compressions under which springs G0 are maintained. As the web is drawn forward it rotates the belts. Because the belt axis 19 of each temple is so disposed as to lie outwardly oblique at an angle a with respect to the axis H of the web in the direction of travel of the web, as depicted in Fig. 1, the belts exert outwardly directed forces on the web tending to maintain the latter at its full width.

I claim:

1. A loom temple comprising in combination a friction-surfaced flexible endless belt, spaced roller means supporting the belt, a generally plane-faced bed plate, means for forcing a substantial area of the belt against the bed plate and means for maintaining the belt axis outwardly oblique with respect to the axis of a web of cloth being woven in the direction of travel of said web, a selvage portion of which is passed between said belt and bed plate.

2. A loom temple comprising in combination a friction-surfaced flexible endless belt, spaced roller means supporting the belt, a generally plane-faced bed plate, the bed plate and belt cooperating to bear on opposite sides of a selvage portion of a web of cloth being woven, a pressure shoe riding on the inner surface of the belt, means for forcing the pressure shoe against the belt toward the bed plate, and means-for maintaining the belt axis outwardly oblique with respect to the axis of said web in the direction of travel of such web.

3. A loom temple comprising in combination a friction-surfaced flexible endless belt, a pair of spaced parallel rollers supporting the belt, a generally plane-faced bed plate, substantial areas of the bed plate and belt co-operating to bear on opposite sides of a selvage portion of a web of cloth being woven, a pressure shoe disposed between the spaced rollers and riding on the inner surface of the belt, means for forcing the pressure shoe against the belt towards the bed plate, and means for maintaining the belt axis outwardly oblique with respect to the axis of said web in the direction of travel of such web.

4. The loom temple defined in claim 3, in which the pressure shoe is longer than the belt is wide and its ends extend beyond said belt, and in which said pressure shoe forcing means includes a U-shaped yoke member the ends of which constitute a pair of generally parallel pressure-applying pins straddling said belt and bearing on opposite ends of that face of said pressure shoe which is remote from said bed plate, a compression spring bearing at one end thereof on said yoke member and means, adjacent the opposite end of said spring, for maintaining the spring under a controlled compression against said yoke member.

6 5. The loom temple defined in claim 4, in which the bed plate constitutes a part of a bracket member which bracket member is provided with bearings for the inner ends of said rollers, in which a housing member longer than said belt is wide is secured to said bracket and extends across said belt generally parallel to said bed plate, said housing member at that end thereof which is remote from said bracket being provided with bearings for the outer ends of said rollers, and in which the spring compressing means is carried on said housing member.

6. The loom temple defined in claim '5, in which the rollers are provided with end flanges constituting guides for the opposite edges of the belt, and in which the pressure shoe is provided, at that end thereof remote from the junction of the bracket with the housing, with a depending lip constituting a guide for the belt intermediate the adjacent roller flanges.

'7. The loom temple defined in claim 6, in which the bracket is provided with a substantially horizontally disposed recess into which recess the inner end of said pressure shoe extends, and in which that end of said housing which is remote from the junction of the housing with the bracket includes a pair of depending terminal portions, in which terminal portions said bearings for the outer ends of the rollers are provided, said spaced terminal portions having their opposed faces generally parallel and in part defining a recess into which recess the outer end of said pressure shoe extends, said recesses constituting guideways for said pressure shoe permitting limited vertical movement while restraining sidewise movement of said pressure shoe.

8. The loom temple defined in claim '7, in which the face of said pressure shoe which is remote from the bed plate is provided with a pair of generally vertical recesses one in each of the ends of said pressure shoe extending beyond said belt, in which said bracket and said housing are provided with generally vertical apertures registering respectively with the said recesses in said pressure shoe, and in which the pin ends of said yoke member pass through said apertures and are engaged in the said recesses in said pressure shoe thereby restraining the pressure shoe against endwise dislodgment.

FRANK A. HOFFMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 104,137 Gilman June 14, 1870 514,867 Pearson Feb. 13, 1894 2,239,191 Chard Apr. 22, 1941 FOREIGN PATENTS Number Country Date 19,136 France Aug. 12, 1857 483,078 Germany Sept. 25, 1929 

